CN208605162U - A kind of shield tunnel geological prospecting borehole hole sealing structure - Google Patents
A kind of shield tunnel geological prospecting borehole hole sealing structure Download PDFInfo
- Publication number
- CN208605162U CN208605162U CN201821162780.XU CN201821162780U CN208605162U CN 208605162 U CN208605162 U CN 208605162U CN 201821162780 U CN201821162780 U CN 201821162780U CN 208605162 U CN208605162 U CN 208605162U
- Authority
- CN
- China
- Prior art keywords
- sealing structure
- pile body
- shield tunnel
- shield
- tunnel geological
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 239000004568 cement Substances 0.000 claims abstract description 17
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract 4
- 238000005553 drilling Methods 0.000 claims description 21
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 14
- 238000010276 construction Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
本实用新型公开了一种盾构隧道地质勘探钻孔封孔结构，在勘探钻孔内从下到上依次施工有盾构废弃渣土填充层、与勘探钻孔螺旋配合的螺旋桩体和回填层。本实用新型整个封堵结构非常简单，所消耗的水泥浆量较少且采用盾构废弃渣土进行回填，实现了废物利用、节能环保，降低了成本；采用螺旋桩体结构实现勘探钻孔的封堵，螺旋桩体与勘探钻孔螺旋配合，增加了桩体与地层间的相互作用，桩体承载力。
The utility model discloses a hole sealing structure for a shield tunnel geological exploration borehole. A shield waste slag filling layer, a screw pile body screwed with the exploration borehole and a backfill are sequentially constructed in the exploration borehole from bottom to top. Floor. The whole plugging structure of the utility model is very simple, the consumption of cement slurry is small, and shield waste slag is used for backfilling, which realizes waste utilization, energy saving and environmental protection, and reduces costs; For plugging, the screw pile body cooperates with the exploration borehole screw, which increases the interaction between the pile body and the stratum, and the bearing capacity of the pile body.
Description
Technical field
The utility model belongs to Shield Construction Technique field more particularly to a kind of shield tunnel geological prospecting borehole sealing of hole knot
Structure.
Background technique
For shield machine as machinery common in subway work, its basic principle is by applying certain pressure to excavation face
Power maintains its stabilization, and it is different to apply stressed mode according to it, can be divided into slurry type shield, earth pressure balanced shield etc., and
General set pressure is in 2bar or more.Before shield tunneling, need to the geology progress detailed exploration along it, and geology
After exploration, the sealing pores of drilling are often weak link.The method for mostly using clay ball that cement slurry is added to backfill at present, but due to
The reason of aperture is shunk, actual effect is often bad.
When shield tunneling to drill hole, under the jacking effect of high pressure, sealing material is easy to be extruded, immediately shield mud
The modifying agent (foaming agent, bentonite slurry etc.) in mud or native storehouse in sump is gushed from drill hole.Particularly, for
The underwater shield-tunneling construction of rivers, Hu Hai are passed through, the mud gushed out can not only impact ecological environment, but also increase shield
The risk of structure construction.In addition, the drilling of failure also results in the decline of shield Caused by Backfill Grouting Pressure and the loss of slurries, it is serious
In the case of can jeopardize shield safe construction.
Patent 201210563813.2 " exploratory hole method for blocking above solvable karst cave " is proposed using flexible cup type bolt
Plug, to can lava area meet solution cavity in the case of exploratory hole method for blocking.In addition, 201410391580.1 " underwater exploration of patent
Hole hole-sealing technology " proposes that a kind of top is equipped with hook, and bottom is nose cone, and outer wall is equipped with the stake plug of bulge loop, passes through accelerated cement
Slurry and the cooperation of stake plug block underwater exploration hole.Both above-mentioned closure mainly for underwater exploration hole, consumed cement slurry compared with
More, plugging structure is more single, does not give full play to the bearing capacity on side friction and stratum, and the computation model blocked is not bright enough
Really.
Utility model content
The application aims to solve at least one of the technical problems existing in the prior art.For this purpose, the purpose of this utility model
One of be to provide a kind of shield tunnel geological prospecting borehole hole sealing structure that plugging effect is good, at low cost, adaptable.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of shield tunnel geological prospecting borehole hole sealing structure, successively construction has shield useless from top to bottom in exploratory bore-hole
The spiral pile body and backfill layer of waste soil filled layer and exploratory bore-hole threaded engagement.
Further, the bottom and top in prospecting bit hole positioned at the spiral pile body are respectively formed with shield and discard dregs
Filled layer and the backfill layer backfilled by the principle of " with native earth backing, with sand also sand ".
Further, the spiral pile body is made of sequentially connected upper pile body and lower pile body, and lower pile body is spinning
So as to visit the threaded drillpipe that drill hole inner wall forms screw thread in exploratory bore-hole, upper pile body is to be filled in exploratory bore-hole thread segment
Interior cement slurry obturator.
Further, the shield discards between dregs filled layer and the threaded drillpipe and is additionally provided with cement injection layer.
Further, the drilling rod is made of one or more sequentially connected drill rod assemblies, and the drill rod assemblies include
Periphery wall is formed with the body of rod of helical blade, is equipped in the body of rod and leads mud hole, the mud hole of leading on adjacent drill pipes component mutually interconnects
It is logical.
Further, described to lead mud hole and constituted by being embedded in the intracorporal PVC mud guiding tube of bar.
Further, the body of rod is made of concrete or rubber.
Further, the arrangement of reinforcement being circular layout is embedded in the body of rod.
Further, the plug that adjacent two drill rod assemblies are formed with slot at docking and match with the slot, phase
Adjacent two drill rod assemblies realize connection by extending transversely through the pin shaft of the plug and slot.
Compared with prior art, the utility model has the following beneficial effects:
1, entire plugging structure is simple, and consumed cement slurry volume is less and is backfilled using the discarded dregs of shield, real
Show waste utilization, energy conservation and environmental protection, reduced costs, realizes the closure of exploratory bore-hole, spiral using spiral pile body structure for the first time
Pile body and exploratory bore-hole threaded engagement increase the interaction of pile body and ground interlayer, pile body bearing capacity.
2, spiral pile body is made of threaded drillpipe and cement slurry obturator, and threaded drillpipe can carry out splicing and combining use, is led to
The plug construction cooperation bolt for crossing upper socket and lower part realizes that threaded drillpipe is provided centrally with mud guiding tube, downward precession process
In, muddy water is discharged from pipe, to reduce penetration resistance, improves injection efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram of hole sealing structure；
Fig. 2 is the structural schematic diagram of auger stem；
Fig. 3 is auger stem size marking schematic diagram；
Fig. 4 is the assembled schematic diagram of auger stem.
Specific embodiment
The utility model is further described below in conjunction with the drawings and specific embodiments.
Referring to figures 1-4, in one embodiment, a kind of shield tunnel geological prospecting borehole hole sealing structure, in exploratory bore-hole
Inside successively construction has shield to discard dregs filled layer 2 and exploratory bore-hole threaded engagement from top to bottom spiral pile body 1 and backfill layer
3.Wherein, it is preferred that backfill layer 2 is backfilled by the principle of " with native earth backing, with sand also sand ", and shield discards dregs using packed
Mode be filled.Entire plugging structure is simple in the present embodiment, and consumed cement slurry volume is less and discarded using shield
Dregs is backfilled, and is realized waste utilization, energy conservation and environmental protection, is reduced costs, and realizes exploratory bore-hole using spiral pile body structure
Closure, spiral pile body and exploratory bore-hole threaded engagement increase the interaction of pile body and ground interlayer, pile body bearing capacity, when
To drill hole, sealing material is not easy to be extruded shield tunneling, and plugging effect is good.
- Fig. 4 referring to fig. 2, in another embodiment, spiral pile body 1 are made of sequentially connected upper pile body 4 and lower pile body 5,
Lower pile body 5 is that diameter is greater than drill bit bore internal diameter, to form the threaded bore of screw thread in exploratory bore-hole inner wall in spinning progradation
Bar, upper pile body 4 are the cement slurry obturator being filled in exploratory bore-hole thread segment.Dregs filled layer 2 and screw thread are discarded in shield
Cement injection layer (not identifying in figure) is additionally provided between drilling rod.
Preferably, drilling rod is made of one or more sequentially connected drill rod assemblies 6, and drill rod assemblies 6 include periphery wall one
Body forms the body of rod 6-1 that (can also use split type) has helical blade 7, is equipped in body of rod 6-1 and leads mud hole 6-2, adjacent drill pipes
The mud hole 6-2 that leads on component 6 is interconnected.It is constituted specifically, leading mud hole 6-2 by being embedded in the intracorporal PVC mud guiding tube of bar.When adopting
When with multiple drill rod assemblies, adjacent two drill rod assemblies 6 are formed with slot 8 and the plug matched with slot 89, phase at docking
Adjacent two drill rod assemblies 6 realize connection by extending transversely through the pin shaft 10 of plug 9 and slot 8.
The specific size of drill rod assemblies 6 are as follows: top diameter D1 is equal to 1.2 times of prospecting bit bore dias, intermediate mud guiding tube diameter D2
It is equal to the 1/2 of top diameter D1 equal to 3cm, lower plug diameter D3, lower plug height h is equal to 5cm, top rim of a cup depth d
Equal to 3cm, overall height H is equal to 3 times of top diameter D1, and the size of periphery wall screw thread meets n:m:k=4:3:1.
The present embodiment, drilling rod can carry out splicing and combining use, cooperate latch structure by upper socket and the plug of lower part
It realizes；It is provided centrally with mud guiding tube, during downward precession, muddy water is discharged from pipe, to reduce penetration resistance, improves injection
Efficiency；When the body of rod is by concrete for making, it is adaptable to the closure of soil layer drilling, when using rubber production, is adaptable to rock
The closure of layer drilling, is the intensity of drilling rod, the arrangement of reinforcement being circular layout also is embedded in the body of rod.
The work progress of the utility model hole sealing structure is as follows:
(1) auger stem is prefabricated: shell injection molded material makes auger stem using concrete or rubber according to demand；
(2) drilling lower part backfill: packed shield is discarded into dregs as lower part sealing material and carries out sealing of hole, packed shield is useless
Waste soil packed height is at the 1m of shield machine top；
(3) prepared by cement slurry: preparing the cement slurry that the ratio of mud is 0.8；
(4) once grouting: will lead slurry pipe and be put into drilling, by leading slurry pipe in prepared cement slurry injection hole,
Marginal not slurry side, which is promoted, leads slurry pipe, and cement mortar perfusion height first stops slip casting when reaching 1m, slurry pipe is led in extraction；
(5) it places auger stem: prefabricated spiral drilling rod is screwed in 0.5m above packed shield dregs；
(6) secondary grouting: will lead slurry pipe again and be put into drilling, until continuing grout injection to desired height, slip casting
After the completion, it is lifted out and leads slurry pipe, and make cement slurry sets 30min；
(7) sealing quality inspection: sealing quality is checked according to corresponding specification；
(8) drilling top backfill: after sealing of hole detection is qualified, upper overburden layer by " with native earth backing, with sand also sand " principle into
Row backfill.
Above-described embodiment is only to clearly demonstrate examples for clearly illustrating the present invention, rather than the restriction to embodiment.
For those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or it changes.Here without can not be also exhaustive to all embodiments.And the obvious variation thus amplified out
Or it changes among still in the protection scope of the utility model.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821162780.XU CN208605162U (en) | 2018-07-23 | 2018-07-23 | A kind of shield tunnel geological prospecting borehole hole sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821162780.XU CN208605162U (en) | 2018-07-23 | 2018-07-23 | A kind of shield tunnel geological prospecting borehole hole sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208605162U true CN208605162U (en) | 2019-03-15 |
Family
ID=65669699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821162780.XU Active CN208605162U (en) | 2018-07-23 | 2018-07-23 | A kind of shield tunnel geological prospecting borehole hole sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208605162U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005367A (en) * | 2019-03-26 | 2019-07-12 | 无锡市政设计研究院有限公司 | A kind of device of drilling and sealing |
| CN112610181A (en) * | 2020-12-30 | 2021-04-06 | 武汉中科岩土工程有限责任公司 | Underwater tunnel engineering exploration hole plugging structure and plugging method thereof |
| CN114876405A (en) * | 2022-06-20 | 2022-08-09 | 中煤科工集团重庆研究院有限公司 | Spiral drill rod type hole packer |
-
2018
- 2018-07-23 CN CN201821162780.XU patent/CN208605162U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005367A (en) * | 2019-03-26 | 2019-07-12 | 无锡市政设计研究院有限公司 | A kind of device of drilling and sealing |
| CN110005367B (en) * | 2019-03-26 | 2024-04-09 | 华昕设计集团有限公司 | Device for hole sealing of drilling holes |
| CN112610181A (en) * | 2020-12-30 | 2021-04-06 | 武汉中科岩土工程有限责任公司 | Underwater tunnel engineering exploration hole plugging structure and plugging method thereof |
| CN114876405A (en) * | 2022-06-20 | 2022-08-09 | 中煤科工集团重庆研究院有限公司 | Spiral drill rod type hole packer |
| CN114876405B (en) * | 2022-06-20 | 2023-07-21 | 中煤科工集团重庆研究院有限公司 | Spiral drill rod type hole packer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102691296B (en) | Pipe pile foundation for static-pressure grouting on pile side and rotary jet grouting at pile bottom and construction method thereof | |
| CN104453913B (en) | A kind of Shaft Stopes front pre-grouting method | |
| CN103089275B (en) | Control method of surrounding rocks in water-rich very-broken surrounding rock tunnel collapse sections | |
| CN107975375B (en) | A kind of miniature steel pipe pile reinforced soft foundation construction method of city tunnel | |
| CN103382847A (en) | Prestressed drilling, anchoring and grouting anchor cable and supporting method | |
| CN106917627B (en) | The advanced support method of pilot tunnel under a kind of water rich strata boring construction | |
| CN208605162U (en) | A kind of shield tunnel geological prospecting borehole hole sealing structure | |
| CN107605498A (en) | Rich water sand-pebble layer shield tunnel termination horizontal grouting ruggedized construction construction method | |
| CN110185413A (en) | A method of stable slip casting channel is formed on easy collapse hole stratum | |
| CN102418536A (en) | Large-aperture pretension bottom plate hollow grouting device | |
| CN108756809B (en) | A kind of sealing method for shield tunnel geological exploration borehole | |
| CN108708743A (en) | A method of using grouting treatment Tunnel Collapse | |
| CN105756700A (en) | Construction method and hole sealing structure for super-large section tunnel for traversing coal measure strata section | |
| CN102777185A (en) | Inclined well shaft construction technology | |
| CN106906840A (en) | The method of offshore wind farm rock-socketed steel pipe piles and the outer grouting construction of stake | |
| CN206625831U (en) | A kind of Karst grouting automatic monitored control system | |
| CN107313745A (en) | A kind of cementing method for crossing the intensive grouting and reinforcing coal bed gas well of many nodes in goaf | |
| CN205152941U (en) | City subway passes through weak sand bed drilling grouting dado structure in karst region | |
| CN105909265B (en) | Pass through the anti-protuberance retrusive deep hole grouting system and method for existing shield tunnel | |
| CN205558943U (en) | Country rock fault slip casting stock in pit | |
| CN204252934U (en) | Test boring device for plugging | |
| CN205576957U (en) | Stake end pilework | |
| CN103114576A (en) | Post grouting construction method for cast-in-place concrete pile | |
| CN207406345U (en) | Rich water sand-pebble layer shield tunnel end horizontal grouting ruggedized construction | |
| CN108729461A (en) | For the constructing structure and construction method on aerial leakage stratum in deep hole impervious wall construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |